Here is the full list of all 12 Wits & Wagers achievements worth 200 gamerscore.
Answer all seven hundred questions of Wits & Wagers!
Play fifty games online.
Play fifty games.
Play with three friends on one Xbox 360 console.
Play with ten different people online.
Receive ten MVP awards.
Receive a MVP award.
A correct bet on the lower than all bet.
Play with five people in one game.
Dance on every round.
Three correct bets in a single game.
Bet all chips on one answer.